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The First Pollen Record of the Younger Dryas in the South of the Russian Far East

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Abstract

The high-resolution pollen record retrieved from dated sediments of the Khanka Depression has made it possible for the first time to reconstruct evolution of vegetation in the south of the Russian Far East that occurred during one of the coldest phase of MIS 2 – the Younger Dryas. The results of the spore-pollen analysis have shown that worsening of climate conditions between 18 200 and 15 500 cal yr BP that occurred after the first, slight warming during MIS 2, caused boreal flora plants, dominating in the south of Russian Far East, to spread again in the drier and colder climate comparable to the Gydan Stage of the Sartan Glaciation. Their distribution areas in the cold climate that differed significantly from the modern ones again started to shift to the south due to increasing cooling. The spruce and small-leaved forests, sparse larch and dwarf birch, alder and dwarf pine forests, and also sphagnum bogs dominated in the ecosystems of the region.

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This work was supported by ongoing institutional funding. No additional grants to carry out or direct this particular research were obtained.

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Correspondence to P. S. Belyanin.

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Translated by L. Mukhortova

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Belyanin, P.S., Belyanina, N.I. The First Pollen Record of the Younger Dryas in the South of the Russian Far East. Dokl. Earth Sc. (2024). https://doi.org/10.1134/S1028334X2460097X

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  • DOI: https://doi.org/10.1134/S1028334X2460097X

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